[B<-in> I<filename>]
[B<-out> I<filename>]
[B<-dsaparam>]
+[B<-check>]
[B<-noout>]
[B<-text>]
[B<-C>]
[B<-2>]
[B<-5>]
[B<-rand> I<file(s)>]
+[B<-engine id>]
[I<numbits>]
=head1 DESCRIPTION
parameters, a fresh DH key should be created for each use to
avoid small-subgroup attacks that may be possible otherwise.
+=item B<-check>
+
+check if the parameters are valid primes and generator.
+
=item B<-2>, B<-5>
The generator to use, either 2 or 5. 2 is the default. If present then the
a file or files containing random data used to seed the random number
generator, or an EGD socket (see L<RAND_egd(3)|RAND_egd(3)>).
Multiple files can be specified separated by a OS-dependent character.
-The separator is B<;> for MS-Windows, B<,> for OpenVSM, and B<:> for
+The separator is B<;> for MS-Windows, B<,> for OpenVMS, and B<:> for
all others.
=item I<numbits>
this option converts the parameters into C code. The parameters can then
be loaded by calling the B<get_dh>I<numbits>B<()> function.
+=item B<-engine id>
+
+specifying an engine (by its unique B<id> string) will cause B<dhparam>
+to attempt to obtain a functional reference to the specified engine,
+thus initialising it if needed. The engine will then be set as the default
+for all available algorithms.
+
=back
=head1 WARNINGS